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Chapter 22. Antiinflammatory, Musculoskeletal, and Antiarthritis Medications. Chapter 22 Lesson 22.1. Learning Objectives. List medications commonly used for the treatment of minor musculoskeletal pain and inflammation
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Chapter 22 Antiinflammatory, Musculoskeletal, and Antiarthritis Medications
Chapter 22 Lesson 22.1
Learning Objectives • List medications commonly used for the treatment of minor musculoskeletal pain and inflammation • Compare the actions of various antiinflammatory and muscle relaxant agents • Identify the appropriate use for musculoskeletal relaxants
Muscular and Skeletal Systems • Bones, joints, muscles, and ligaments • Antiinflammatory and analgesic drugs • Skeletal muscle relaxants • Drugs used to treat arthritis • Drugs used to treat gout
The Inflammatory Response • Triggers to inflammation • Phases of the inflammatory response • Symptoms of inflammation • Cellular response
Antiinflammatory and Analgesic Agents • Aspirin: acetylsalicylic acid (ASA) • Acetaminophen • NSAIDs
Salicylates Action • Analgesic, antipyretic, and antiinflammatory effects • Stop the production of prostaglandins • Table 22-1 Uses • Treatment of mild to moderate pain; reduces the risk of myocardial infarctions and stroke, as well as transient ischemic attacks (TIAs) in men • First-line therapy for various forms of arthritis, fever, myalgia, neuralgia, arthralgia, headache, and dysmenorrhea • Systemic lupus erythematosus, acute rheumatic fever
Salicylates (cont.) Adverse Reactions • Tinnitus, visual disturbances, edema, urticaria, anorexia, epigastric discomfort, and nausea Drug Interactions • Alcohol use increases the chance for GI bleeding; NSAIDs; sulfonamides, sulfonylureas; phenytoin
Salicylates (cont.) Nursing Implications • Assessment, diagnosis, planning, implementation, and evaluation Patient Teaching • Administration time, adverse effects; time for drug effectiveness; implications for drug interactions and when to contact the healthcare provider; storage and safety; other routes of administration if PO is not tolerated
Acetaminophen • Over-the-counter drug used to treat fever and pain; no antiinflammatory effect • Action: antipyretic – direct action of the hypothalamic heat-regulating center; blocks pyogenic cytokines through vasodilation and sweating • Use: chronic, nonmalignant pain; osteoarthritis • Adverse reactions: rare blood response; liver toxicity; overdosage can be fatal • Drug interactions and hepatotoxicity
Nonsteroidal Antiinflammatory Drugs • Action: unknown; may block prostaglandins; analgesic, antiinflammatory, and antipyretic effects • Uses: rheumatic disease, degenerative joint disease, osteoarthritis, and acute musculoskeletal problems • Adverse reactions: GI most common • Drug interactions • Nursing implications and patient teaching
Skeletal Muscle Relaxants • Action: reduce muscle tone and involuntary movement without loss of voluntary motor function • Centrally acting or direct myotropic blocking • Uses: relief of pain in musculoskeletal and neurologic disorders involving peripheral injury and inflammation; relief of spasticity in chronic conditions • Table 22-2
Skeletal Muscle Relaxants (cont.) • Adverse reactions: symptoms • Drug interactions: sedatives, narcotic analgesics, antianxiety agents, hypnotics, alcohol, general anesthetics, MAOIs, and tricyclics • Cyclobenzaprine and orphenadrine: anticholinergic effects that interfere with antihypertensive activity of alpha-adrenergic blockers
Skeletal Muscle Relaxants (cont.) • Nursing implications: assessment, diagnosis, planning, implementation, and evaluation • Patient and family teaching: administration considerations; avoiding activities requiring alertness; drug interactions; missed dosages; when to contact the health care provider; HS administration; storage and safety
Chapter 22 Lesson 22.2
Learning Objectives • Explain the mechanisms of action for different antiarthritis medications • Describe adverse reactions often found in the use of antiarthritis medications • Describe the clinical situations in which uricosuric therapy may be indicated
Antiarthritis Medications • Inflammation of the joints • Rheumatoid arthritis: autoimmune response • Osteoarthritis: local joint destruction of weight-bearing joints • Symptoms • Complementary and Alternative Therapies
Slow-Acting Antirheumatic Drugs SAARDs • Gold Compounds • Hydroxychloroquine sulfate • Penicillamine • Methotrexate
Gold Compounds • Chrysotherapy • Action: unknown; interference with biochemical reactions at the cellular level; inhibit lysosomal enzyme activity; effect on antigen response in rheumatoid arthritis; stops synovitis • Adverse reactions and toxicities • Dosage and administration • Forms of medication
Hydroxychloroquine Sulfate • Action: unknown; antimalarial drug; acts to stop antigen formation in the body • Uses • Adverse reactions • Drug effectiveness • Drug interactions
Infliximab • Action/Use: in combination with methotrexate to reduce signs and symptoms of rheumatoid arthritis, Crohn’s disease, other orthopedic inflammatory or destructive processes • Adverse reactions: FDA warning; symptoms
Leflunomide • Action: pyrimidine synthesis inhibitor that has an antiinflammatory effect • Use: adults with rheumatoid arthritis • Therapy: initial and maintenance • Adverse reactions: FDA warning label
Methotrexate • Action: unknown, may affect the immune function to reduce inflammation • Uses: treatment of cancer and rheumatoid arthritis • Toxicities
Penicillamine • Action: chelating agent • Use: rheumatoid arthritis • Nursing implications: assessment, diagnosis, planning, implementation, evaluation • Patient and family teaching: treatment length/drug effectiveness; toxic effects; when to contact healthcare provider; monitoring; brief pain increase following injection; adverse reactions
Antigout Medications • Uric acid • Uric acid levels; crystal formation • Symptoms • Gouty arthritis • Relief of pain and inflammation – acute period • Uricosuric agents • Table 22-4
Uricosuric Agents • Action: increase excretion of urate salts in the urine by blocking tubular reabsorption of these salts in the kidney; decrease amounts of circulating urate and deposition of urate; promote reabsorption of urate deposits • Uses: reduce uric acid levels in patients who do not excrete enough uric acid
Uricosuric Agents (cont.) • Adverse reactions: drug-specific symptoms • Drug interactions • Salicylates • Increased drug effects • Acidifying and alkalinizing agents • Anticoagulants • Hypersensitivity reactions
Uricosuric Agents (cont.) • Nursing implications: assessment, diagnosis, planning, implementation, evaluation • Patient and family teaching: preventing attacks; drug administration; diet and fluid intake; self-monitoring of urine and stools; when to contact the health care provider; colchicine administration; drug interactions